Setting up a server

Currently, there are only instructions for setting up a server on Linux. Feel free to add instructions for other platforms.

For additional details, see administration tips.

Setting up an AAGRINDER server on Linux

You'll need these things installed:

• git
• g++
• Node.js
• npm

Acquire the AAGRINDER server software:

$ git clone https://gitlab.com/MRAAGH/aagrinder.git
$ cd aagrinder
$ npm install

You also need the AAGRINDER terrain generator (compiled from source):

$ git clone https://gitlab.com/MRAAGH/aagrinder-terrain.git
$ cd aagrinder-terrain
$ make

The directory aagrinder-terrain should be inside the directory aagrinder.

Move back to the directory aagrinder, then start the server:

$ cd ..
$ npm start

A config.json file will be created. You can change the server configuration, although the defaults should already be functional.

Now, anyone who can access your computer via internet can easily connect to your aagrinder server.

Secure connection over HTTPS

The AAGRINDER server by itself exposes a HTTP website. For better security, HTTPS is preferred. To achieve this, an additional software component needs to be involved as a reverse proxy. In this guide, we use Nginx.

A Nginx configuration for proxying AAGRINDER might look like this:

server {
    server_name aagrinder.xyz;

    location / {
        proxy_pass http://localhost:8926;
    }

    location ~* /.io {
        proxy_pass http://localhost:8926;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-NginX-Proxy false;
        proxy_set_header Host $host;
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    listen [::]:443 ssl;
    listen 443 ssl;
    ssl_certificate /etc/letsencrypt/live/aagrinder.xyz/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/aagrinder.xyz/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
}

server {
    return 302 https://$host$request_uri;

    server_name aagrinder.xyz;

    listen 80;
    listen [::]:80;**
}

Here, AAGRINDER is running on port 8926 and is accessible from the outside on port 443 (https) through Nginx. The HTTPS certificate, located at /etc/letsencrypt/live/aagrinder.xyz was acquired from Let's Encrypt using certbot. For reference, the specific command used to acquire this certificate was:

# certbot certonly --nginx -d aagrinder.xyz

Once you have HTTPS access, it is recommended to enable restrict_to_localhost in your server settings.

First time using Nginx?

Here are more detailed instructions:

1. acquire a domain name which points to your server's IP address. For hosting AAGRINDER, poke Maze and you might get a subdomain of aagrinder.xyz for free.
2. install nginx, certbot and python3-certbot-nginx on your server.
3. certbot certonly --dry-run --nginx -d yourdomain.com run this command to test if you can get a certificate. You may need to run this multiple times before it works.
4. make sure the above command works before proceeding! Otherwise you might get blocked on the letsencrypt service!
5. once you're sure it will work, run certbot certonly --nginx -d yourdomain.com (same command but without --dry-run)
6. put the above configuration file into '/etc/nginx/sites-available/yourdomain.com' and make sure to change aagrinder.xyz to yourdomain.com
7. ln -s /etc/nginx/sites-available/yourdomain.com /etc/nginx/sites-enabled/yourdomain.com
8. run nginx -t to check if your nginx configuration is valid
9. run systemctl reload nginx to enable your new configuration